KF-Promoted copper-catalyzed highly efficient and selective oxidation of methane and other alkanes with a dramatic additive effect
KF-Promoted copper-catalyzed highly efficient and selective oxidation of methane and other alkanes with a dramatic additive effect
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DOI：
10.1039/d1cy00474c
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发表时间：
2021-06
影响因子：
5
通讯作者：
Luyao Liu;W. Fan;Wei Chen;Xiaoyan Chen;Suhua Li
中科院分区：
文献类型：
--
作者：
Luyao Liu;W. Fan;Wei Chen;Xiaoyan Chen;Suhua Li
在三氟乙酸（TFA）和三氟乙酸酐（TFAA）中，CuCl/KF/K2S2O8介导甲烷高效氧化生成三氟乙酸甲酯。系统评价了加性效应，确定了氟化钾（KF）是筛选盐中最有效的促进剂。在对照实验的基础上，推测KF表现出盐效应，促进[SO4˙]−自由基逃离溶剂笼。环己烷和金刚烷也可以有效地氧化成苯或相应的三氟乙酸酯。
Highly efficient oxidation of methane to methyl trifluoroacetate mediated by CuCl/KF/K2S2O8 in trifluoroacetic acid (TFA) and trifluoroacetic anhydride (TFAA) is described. The additive effect has been systematically evaluated and potassium fluoride (KF) was identified as the most effective promoter among the salts screened. KF is conjectured to exhibit the salt effect to promote the [SO4˙]− radical to escape the solvent cage based on control experiments. Cyclohexane and adamantane could also be efficiently oxidized into benzene or corresponding trifluoroacetates.